Engineering Creativity Award: Laser Induced Breakup or & Atomization of Small Liquid Jets

工程创意奖：激光诱导破碎或

• 批准号: 8811625
• 负责人: Edward Anderson
• 金额: $ 8.94万
• 依托单位: Texas Tech University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-01 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8811625&HistoricalAwards=false
• 关键词: Engineering; Creativity; Award; Laser; Induced

Atomization of fluid flow requires that fluid flow breakup quickly and produce a spray of small droplets. Present methods produce a random distribution of droplet sizes. The objective of this research program is to theoretically investigate and to determine the feasibility of a laser actuated atomizer. The atomizer should be capable of producing a controllable mean droplet size and a narrow size distribution. A theoretical study of the behavior of a jet with a high frequency, periodically applied side, or axisymmetric force will be undertaken. The results of this study will determine the laser pulse rate, radiation pressure and contact area required for atomization of a given fluid flow. Water, hydrocarbons (gasoline) and variouis points will be evaluated. Study of the laser interactions with fluid jets would define the wavelength of the laser beam required for proper energy coupling to the fluid and the means by which to obtain the proper pulse switching frequency. The laser actuated atomizer would be constructed and an experimental analysis of its performance made in the laboratory. The droplets formed by the laser actuated atomizer would be analyzed either by high speed photography or laser vizualization.

流体流的雾化要求流体流快速分解并产生小液滴喷雾。 目前的方法产生液滴尺寸的随机分布。 该研究计划的目的是从理论上研究并确定激光驱动雾化器的可行性。 雾化器应该能够产生可控的平均液滴尺寸和窄的尺寸分布。 对高频、周期性施加侧面或轴对称力的射流行为进行理论研究。 这项研究的结果将确定给定流体流雾化所需的激光脉冲速率、辐射压力和接触面积。 将评估水、碳氢化合物（汽油）和各种点。 对激光与流体射流相互作用的研究将定义与流体适当能量耦合所需的激光束的波长以及获得适当脉冲切换频率的方法。 将在实验室中构建激光驱动雾化器并对其性能进行实验分析。 由激光驱动雾化器形成的液滴将通过高速摄影或激光可视化进行分析。